Medical researchers often test medicines on patients who have given informed consent for the tests. The researchers divide the patients into two groups. One group is given the medicine. The second group is given a harmless substitute such as sugar pills. Neither the patients nor the researchers know which patients have received the medicine and which have received the substitute. What is the purpose of such a procedure? to increase accuracy to increase precision to decrease bias to decrease patient safety

Writing about thing people usually do

Time is not always change. time can also mean continuity, and it can mean keeping acknowledged truths in mind despite differences in circumstances.there is no better example of this in things fall apart than the retellings of the proverb about the bird named eneke, the language in both retellings is almost identical despite the length of time that has passed between their repetitions. in comparing the usages of the same proverb, achebe allows his readers to note the similarities and differences between the situations, and he them understand how this story can be applied to their own lives.

Read the excerpt from the odyssey; 'o cyclops! would you feast on my companions? puny am i, in a caveman's hands? how do you like the beating that we gave you, you d(arn)ed cannibal? eater of guests under your roof! zeus and the gods have paid you! ' according to this excerpt, odysseus (a)is fearful of the cyclops. (b)is prideful and overly confident. (c)has been weakened by the cyclops. (d)has regrets about staying on the island.